Alert archive / Oklahoma / Mesoscale Discussions in 2018
Mesoscale Discussion 964
The Storm Prediction Center issued this mesoscale discussion at Jun 30, 2018, 6:15 PM CDT for 14 counties in Kansas; 26 counties in Oklahoma. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Jun 30, 2018, 6:15 PM CDT (23:15 UTC)
- Expired
- Jun 30, 2018, 7:45 PM CDT
- In force
- 90 min
- Issued by
- the Storm Prediction Center
All 40 counties
Butler County, KS, Chautauqua County, KS, Cowley County, KS, Elk County, KS, Greenwood County, KS, Harper County, KS, Kingman County, KS, Labette County, KS, Montgomery County, KS, Neosho County, KS, Sedgwick County, KS, Sumner County, KS, Wilson County, KS, Woodson County, KS, Cleveland County, OK, Coal County, OK, Creek County, OK, Garfield County, OK, Garvin County, OK, Grant County, OK, Hughes County, OK, Kay County, OK, Lincoln County, OK, Logan County, OK, McClain County, OK, Murray County, OK, Noble County, OK, Nowata County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pontotoc County, OK, Pottawatomie County, OK, Rogers County, OK, Seminole County, OK, Tulsa County, OK, Washington County, OK
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 11.3 hours before the alert went out and 144 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1104 J/kg
- Mixed-layer CIN
- -172 J/kg
- Mixed-layer LCL
- 1066 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 9:37 PM CDT | Mesoscale Discussion | SPC | Decatur, Ellis, Finney, Gove, Graham, Lane and 12 more | 113 min |
| Jun 30, 3:15 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 18 more | 90 min |
| Jun 30, 3:50 PM CDT | Severe Thunderstorm Watch | SPC | Butler, Chase, Chautauqua, Cowley, Elk, Greenwood and 7 more | 5 hr |
| Jun 30, 4:40 PM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Chase, Clay, Coffey, Doniphan and 19 more | 95 min |
| Jun 30, 4:57 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Atchison, Brown, Clay, Coffey, Dickinson and 20 more | 6 hr |
| Jun 30, 5:40 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Rawlins, Sherman, Thomas | 2 hr |
| Jun 30, 6:09 PM CDT | Severe Thunderstorm Watch | SPC | Cheyenne, Decatur, Gove, Graham, Jewell, Logan and 11 more | 7 hr |
| Jun 30, 12:43 PM CDT | Mesoscale Discussion | SPC | Beckham, Blaine, Caddo, Canadian, Carter, Cleveland and 25 more | 92 min |
Nearby
Mesoscale Discussions in Oklahoma, 2018Mesoscale Discussions in Kansas, 2018Every mesoscale discussion in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.